@article{PM_1999_1999_1_a11,
     author = {Ikemakhen, A.},
     title = {Sobre la holonom{\'\i}a de variedades pseudo-riemannianas de signatura (2, 2+n)},
     journal = {Publicacions matem\`atiques},
     pages = {55-84},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1999},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PM_1999_1999_1_a11/}
}